US9644060B2ActiveUtilityA1

Hydrophobic crosslinkable acetoacetylated lactam/vinyl alcohol copolymers

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Assignee: HOOD DAVID KPriority: Oct 4, 2007Filed: Sep 9, 2015Granted: May 9, 2017
Est. expiryOct 4, 2027(~1.2 yrs left)· nominal 20-yr term from priority
Inventors:David K. Hood
C08F 26/06C08F 216/06B41M 5/5254C08F 26/10C08F 226/10
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Cited by
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References
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Claims

Abstract

This invention relates to lactam/vinyl alcohol copolymers, and more specifically, to hydrophobic cross-linkable acetoacetylated lactam/vinyl alcohol copolymers suitable for use in a variety of applications including printing, inks, membranes, coatings, adhesives, oil treatment chemicals (such as gas and kinetic hydrate inhibitors), and fiber/textile treatments.

Claims

exact text as granted — not AI-modified
What is claimed: 
     
       1. An inkjet recording medium comprising a support and the hydrophobic crosslinkable acetoacetylated lactam/vinyl alcohol copolymer wherein the copolymer is formed by:
 a) polymerizing vinylpyrrolidone and vinyl acetate monomers to produce a poly(vinylpyrrolidone/vinyl acetate) copolymer, wherein the resulting poly(vinylpyrrolidone/vinyl acetate) copolymer is between 30% and 70% vinylpyrrolidone monomers by weight and between 30% and 70% vinyl acetate monomers by weight; 
 b) at least partially hydrolyzing the vinyl acetate of the poly(vinylpyrrolidone/vinyl acetate) copolymer to produce a poly(vinylpyrrolidone/vinyl alcohol) copolymer optionally comprising vinyl acetate depending on degree of hydrolyzation; and 
 c) in an acetoacetylation step, at least partially acetoacetylating the vinyl alcohol of the poly(vinylpyrrolidone/vinyl alcohol) copolymer with a diketene to obtain the hydrophobic, crosslinkable acetoacetylated lactam/vinyl alcohol copolymer. 
 
     
     
       2. The inkjet recording medium of  claim 1  which has enhanced dye fade stability. 
     
     
       3. The inkjet recording medium of  claim 1  wherein the poly(vinylpyrrolidone/vinyl acetate) copolymer comprises from about 50 to 70% by weight vinylpyrrolidone. 
     
     
       4. The inkjet recording medium of  claim 3  wherein the poly(vinylpyrrolidone/vinyl acetate) copolymer is 50% by weight vinylpyrrolidone and 50% by weight vinyl acetate. 
     
     
       5. The inkjet recording medium of  claim 1  wherein the poly(vinylpyrrolidone/vinyl acetate) copolymer is 70% by weight vinylpyrrolidone and 30% by weight vinyl acetate.

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